diff options
| author | Takashi Iwai <tiwai@suse.de> | 2021-11-16 07:54:14 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-11-16 07:55:15 +0100 |
| commit | 85b741c1cb6854478fd1aa13ac231e2c1baf4c4b (patch) | |
| tree | 55635183e461f3699c28b1d3c6450c3c62b9cbc8 /sound/usb/mixer.c | |
| parent | fd23116d7b8dffa05f42a857eee6ee9cce238d24 (diff) | |
ALSA: usb-audio: Add minimal-mute notion in dB mapping table
Some devices do mute the volume at the minimal volume, and for such
devices, we need to set SNDRV_CTL_TLVT_DB_MINMAX_MUTE to the TLV
information. It corresponds to setting usb_mixer_elem_info.min_mute
flag in the USB-audio driver.
This patch adds a new field min_mute in usbmix_dB_map so that the
mixer map entry can pass the flag.
Link: https://lore.kernel.org/r/20211116065415.11159-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/mixer.c')
| -rw-r--r-- | sound/usb/mixer.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 6e7bac8203ba..5b9fd07ce2a2 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -145,6 +145,7 @@ static inline void check_mapped_dB(const struct usbmix_name_map *p, if (p && p->dB) { cval->dBmin = p->dB->min; cval->dBmax = p->dB->max; + cval->min_mute = p->dB->min_mute; cval->initialized = 1; } } |